Failed to initialise app. MBean Exception.

In order to reproduce (It happens to me at 3.2.2-DM)
1) I copy my zipped app to the apps dir
2) Start mule
3) Stop mule
4) Copy the same zipped app to the apps dir (a redeploy) without out deleting my old app
5) Start mule

Starting the Mule Container...
WrapperManager: Initializing...
INFO 2012-04-24 18:35:42,750 [WrapperListener_start_runner] org.mule.module.launcher.MuleContainer:
**********************************************************************

• Mule ESB and Integration Platform *
• Version: 3.2.2-DM Build: 24339 *
• MuleSoft, Inc. *
• For more information go to http://www.mulesoft.org *
• *
• Server started: 4/24/12 6:35 PM *
• JDK: 1.6.0_24 (mixed mode) *
• OS: Mac OS X (10.6.8, x86_64) *
• Host: donkey.local (172.16.20.140) *
  **********************************************************************
  WARN 2012-04-24 18:35:42,767 [WrapperListener_start_runner] com.mulesoft.mule.cluster.boot.ClusterCoreExtension: No cluster ID was specified – High Availability will be disabled:
  INFO 2012-04-24 18:35:42,786 [WrapperListener_start_runner] org.mule.module.launcher.DefaultMuleDeployer: Exploding a Mule application archive: file:/Users/machaval/Downloads/mule-enterprise-standalone-3.2.2-DM/apps/bug-array.zip
  INFO 2012-04-24 18:35:42,959 [WrapperListener_start_runner] org.mule.module.launcher.application.DefaultMuleApplication:
  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  + New app 'bug-array' +
  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  INFO 2012-04-24 18:35:46,965 [WrapperListener_start_runner] org.mule.module.launcher.DeploymentService:
  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  + Started app 'bug-array' +
  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  INFO 2012-04-24 18:35:46,965 [WrapperListener_start_runner] org.mule.module.launcher.application.DefaultMuleApplication:
  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  + New app 'bug-array' +
  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  ERROR 2012-04-24 18:35:47,549 [WrapperListener_start_runner] org.mule.module.launcher.DeploymentService:
  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  + Failed to deploy app 'bug-array', see below +
  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  org.mule.module.launcher.DeploymentException: Failed to deploy application [bug-array]
  at org.mule.module.launcher.DefaultMuleDeployer.deploy(DefaultMuleDeployer.java:68)
  at org.mule.module.launcher.DeploymentService.start(DeploymentService.java:171)
  at org.mule.module.launcher.MuleContainer.start(MuleContainer.java:157)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:597)
  at org.mule.module.reboot.MuleContainerWrapper.start(MuleContainerWrapper.java:56)
  at org.tanukisoftware.wrapper.WrapperManager$12.run(WrapperManager.java:3925)
  Caused by: org.mule.api.MuleRuntimeException: MBeans Failed to initialise
  at org.mule.module.management.agent.JmxAgent$MuleContextStartedListener.onNotification(JmxAgent.java:707)
  at org.mule.module.management.agent.JmxAgent$MuleContextStartedListener.onNotification(JmxAgent.java:685)
  at org.mule.context.notification.Sender.dispatch(Sender.java:40)
  at org.mule.context.notification.Policy.dispatch(Policy.java:122)
  at org.mule.context.notification.ServerNotificationManager.notifyListeners(ServerNotificationManager.java:244)
  at org.mule.context.notification.ServerNotificationManager.fireNotification(ServerNotificationManager.java:197)
  at org.mule.DefaultMuleContext.fireNotification(DefaultMuleContext.java:404)
  at org.mule.DefaultMuleContext.start(DefaultMuleContext.java:226)
  at org.mule.module.launcher.application.DefaultMuleApplication.start(DefaultMuleApplication.java:146)
  at org.mule.module.launcher.application.ApplicationWrapper.start(ApplicationWrapper.java:107)
  at org.mule.module.launcher.DefaultMuleDeployer.deploy(DefaultMuleDeployer.java:52)
  ... 8 more
  Caused by: javax.management.InstanceAlreadyExistsException: Mule.bug-array:type=Statistics,name=AllStatistics
  at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:453)
  at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.internal_addObject(DefaultMBeanServerInterceptor.java:1484)
  at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:963)
  at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:917)
  at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:312)
  at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:482)
  at org.mule.module.management.agent.JmxAgent.registerStatisticsService(JmxAgent.java:352)
  at org.mule.module.management.agent.JmxAgent$MuleContextStartedListener.onNotification(JmxAgent.java:695)
  ... 18 more
  INFO 2012-04-24 18:35:47,551 [WrapperListener_start_runner] org.mule.module.launcher.application.DefaultMuleApplication:

WORKAROUND
Delete old app dir

The problem is cause by some changes in the DeploymentService class, both deployed and zipped apps where deployed at mule start, causing the error. The issue also existed when mule was started using the app argument with -app appX:appX:appX

Fix 3.1.x
http://fisheye.codehaus.org/changelog/mule/?cs=24354

Fix 3.2.x
http://fisheye.codehaus.org/changelog/mule/?cs=24355

Fix 3.3.x
http://fisheye.codehaus.org/changelog/mule/?cs=24356

Fix 3.x
http://fisheye.codehaus.org/changelog/mule/?cs=24357